From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753568AbaHEVM0 (ORCPT ); Tue, 5 Aug 2014 17:12:26 -0400 Received: from mga11.intel.com ([192.55.52.93]:22378 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753009AbaHEVMZ (ORCPT ); Tue, 5 Aug 2014 17:12:25 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.01,807,1400050800"; d="scan'208";a="572182881" Date: Wed, 6 Aug 2014 05:12:24 +0800 From: Fengguang Wu To: Peter Zijlstra , x86@kernel.org Cc: LKML , lkp@01.org Subject: [microcode/load_module] WARNING: CPU: 0 PID: 1444 at kernel/sched/core.c:7094 __might_sleep+0x51/0x16f() Message-ID: <20140805211224.GA13480@localhost> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Heirloom mailx 12.5 6/20/10 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Greetings, Here is a microcode/load_module error triggered by debug check commit 64c2181bc433b17f04da8fe8592aa83cceac9606 ("sched: Debug nested sleeps"): [ 6.010476] microcode: CPU0 sig=0x106a3, pf=0x1, revision=0x1 [ 6.011896] microcode: CPU1 sig=0x106a3, pf=0x1, revision=0x1 [ 6.020554] ------------[ cut here ]------------ [ 6.021988] WARNING: CPU: 0 PID: 1444 at kernel/sched/core.c:7094 __might_sleep+0x51/0x16f() [ 6.024909] do not call blocking ops when !TASK_RUNNING; state=1 set at [] prepare_to_wait_event+0xb2/0xee [ 6.026998] Modules linked in: microcode(+) [ 6.027998] CPU: 0 PID: 1444 Comm: modprobe Not tainted 3.16.0-02034-gf5d04af #1 [ 6.029603] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 6.030674] 0000000000000000 ffff88003da2bd00 ffffffff819c7cb6 ffff88003da2bd48 [ 6.032577] ffff88003da2bd38 ffffffff810e1dd0 ffffffff810ff665 ffff88003d91b7e0 [ 6.034417] ffffffff81cd5c89 0000000000000061 0000000000000000 ffff88003da2bd98 [ 6.036236] Call Trace: [ 6.036908] [] dump_stack+0x4d/0x66 [ 6.037894] [] warn_slowpath_common+0x7f/0x98 [ 6.038601] microcode: Microcode Update Driver: v2.00 , Peter Oruba [ 6.040761] [] ? __might_sleep+0x51/0x16f [ 6.041861] [] warn_slowpath_fmt+0x4c/0x4e [ 6.043034] [] ? __vmalloc_node_range+0x18d/0x1f1 [ 6.044270] [] ? module_alloc_update_bounds+0x14/0x5f [ 6.045458] [] ? prepare_to_wait_event+0xb2/0xee [ 6.046592] [] ? prepare_to_wait_event+0xb2/0xee [ 6.048258] [] __might_sleep+0x51/0x16f [ 6.049501] [] mutex_lock+0x20/0x42 [ 6.050601] [] finished_loading+0x19/0x63 [ 6.051823] [] load_module+0x522/0x1f0a [ 6.053086] [] ? trace_hardirqs_on_thunk+0x3a/0x3c [ 6.054498] [] ? retint_restore_args+0x13/0x13 [ 6.055607] [] ? wait_woken+0x69/0x69 [ 6.056645] [] SyS_init_module+0xca/0xd9 [ 6.057637] [] system_call_fastpath+0x16/0x1b [ 6.058751] ---[ end trace ee9cd23bc6a36c85 ]--- [ 6.098452] ------------[ cut here ]------------ Thanks, Fengguang